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HC3-5504B-9 Datasheet(PDF) 9 Page - Intersil Corporation |
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HC3-5504B-9 Datasheet(HTML) 9 Page - Intersil Corporation |
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9 / 9 page  59 Applications Diagram FIGURE 1. TYPICAL LINE CIRCUIT APPLICATION WITH THE MONOLITHIC SLIC Typical Component Values C2 = 0.15µF, 10V C3 = 0.3µF, 30V C4 = 0.5µF to 1.0µF, 10%, 20V (Should be nonpolarized) C5 = 0.5µF, 20V C6 = C7 = 0.5µF (10% Match Required) (Note 7) C8 = 0.01µF, 100V C9 = 0.01µF, 20V, ±20% R1 =R2 =R3 = 100kΩ (0.1% Match Required, 1% absolute value) ZB = 0 for 600 Ω Terminations (Note 7). RB1 =RB2 =RB3 =RB4 = 150Ω (0.1% Match Required, 1% absolute value). RS1 = RS2 =1kΩ, typically. CS1 =CS2 = 0.1µF, 200V typically, depending on VRING and line length. Z1 = 150V to 200V transient protection. PTC used as ring generator ballast. NOTES: 6. Secondary protection diode bridge recommended is a 2A, 200V type. 7. To obtain the specified transhybrid loss it is necessary for the three legs of the balance network, C6-R1 and R2 and C7-ZB-R3, to match in im- pedance to within 0.3%. Thus, if C6 and C7 are 1µF each, a 20% match is adequate. It should be noted that the transmit output to C6 sees a - 22V step when the loop is closed. Too large a value for C6 may produce an excessively long transient at the op amp output to the PCM Fil- ter/CODEC. A 0.5 µF and 100kΩ gives a time constant of 50ms. The uncommitted op amp output is internally clamped to stay within ±5.5V and also has current limiting protection. 8. All grounds (AG, BG, and DG) must be applied before VB+orVB-. Failure to do so may result in premature failure of the part. If a user wishes to run separate grounds off a line card, the AG must be applied first. 9. Application shows Ring Injected Ringing, Balanced or Tip injected configuration may be used. 10. Pin numbers given for DIP/SOIC package. RB4 K1B K1A RING RING FEED RING FEED SENSE TIP VB - SLIC HC-5504B RS1 RB2 RB1 PTC Z1 -48V 150VPEAK (MAX) RING GENERATOR RING RB3 RS2 CS2 SUBSCRIBER LOOP -48V SYSTEM CONTROLLER K1 8 1 9 10 3 2 1 TIP FEED TIP RD OP AMP RX TX +IN -IN OUT C2 C3 C4 NEG. BATT. BATT. GND. DIG. GND. ANA. GND. VB+ POWER DENIAL SWITCH HOOK DETECT GROUND KEY DETECT RING SYNC RING CMD 15 13 14 7 16 11 12 6 23 C9 4 VB + C8 C4 C3 C2 + + 21 24 20 19 18 17 5 22 C6 R1 R2 C7 C5 R3 BALANCE NETWORK PCM FILTER/ CODEC SWITCHING NETWORK ZB 5V TO 12V PRIMARY PROTECTION CS1 HC-5504B |
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